Definition of unibody in English:

noun (plural unibodies)

A full-frame bodyshop cannot build a unibody vehicle - at least not currently.

Some modifications had to be made to the paint facility to account for the extra size of the new Range Rover's ‘envelope’ - it is thought to be the largest unibody construction in the motoring world - and its greater weight.

Do that to a unibody vehicle and it will have more cross- and corner-braces than the Eiffel Tower, and even then it probably won't feel right.